dup (thing) by ariels - Everything2.com

(Forth:)
Duplicates the top element on the stack. Since almost all words remove their arguments from the stack, this is a very useful word. Sample usage:
```
   : SQUARE ( x -- x-squared ) DUP * ;
```
(UN*X:)
System call to create a duplicate of an open file descriptor. Used mainly in conjunction with fork() to attach a subprocess' standard input or standard output to other files (or pipes); using dup2 is usually more convenient, though.

chup	?dup	Forth	drumspeak
Kiwi dip	Advanced Unix Programming	diga	Stormont
Irish Political Parties	Stack Manipulation Instructions	Ian Paisley	Drumcree
Good Friday Agreement	UUP	George Washington's 1791 State of the Union Address	PostScript command reference
PostScript Code to Draw A Sierpinski Triangle	Marching Orders	David Trimble	Dumpster diving
Swear words from science fiction	Unionist	Pup

dup (thing)

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